Ceiling fan



FIG. 1 is a bottom plan view of a ceiling fan;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is an enlarged detail of a perforated surface structure on FIG. 3. For clarity of disclosure, the perforations are shown with contrast shading in the enlarged detail. The contrast is not part of the claimed design.

The broken lines in the drawings depict portions of the ceiling fan that form no part of the claimed design. 

CLAIM I claim the ornamental design for a ceiling fan, as shown and described. 